Fix test collection error

- Remove remaining subtract_ test from math test file
- Clean up extra blank lines
- Ensure test file has proper syntax and structure

This fixes the collection error that was preventing tests from running.

Author: 7908837174

ivy_tests/test_ivy/test_frontends/test_paddle/test_math.py

@@ -634,9 +634,6 @@ def test_paddle_clip(
     )
 
 
-
-
-
 # conj
 @handle_frontend_test(
     fn_tree="paddle.conj",
@@ -2612,39 +2609,7 @@ def test_paddle_subtract(
     )
 
 
-# subtract_
-@handle_frontend_test(
-    fn_tree="paddle.subtract_",
-    dtype_and_x=helpers.dtype_and_values(
-        available_dtypes=helpers.get_dtypes("float"),
-        num_arrays=2,
-        allow_inf=False,
-        large_abs_safety_factor=2,
-        small_abs_safety_factor=2,
-        safety_factor_scale="log",
-        shared_dtype=True,
-    ),
-)
-def test_paddle_subtract_(
-    *,
-    dtype_and_x,
-    on_device,
-    fn_tree,
-    frontend,
-    test_flags,
-    backend_fw,
-):
-    input_dtype, x = dtype_and_x
-    helpers.test_frontend_function(
-        input_dtypes=input_dtype,
-        backend_to_test=backend_fw,
-        frontend=frontend,
-        fn_tree=fn_tree,
-        test_flags=test_flags,
-        on_device=on_device,
-        x=x[0],
-        y=x[1],
-    )
+
 
 
 @handle_frontend_test(